Projectile motion worksheet - DP Physics

1 Projectile motion worksheet1. A ball is kicked horizontally at m/s from a cliff 80m high. How far from the base of the cliff will the stone strike the ground? = +12 2, =0 / =2 =(2)(80) = =8 = = 8 m/s80 mx2. How long will it take a shell fired from a cliff at an initial velocity of 800 m/s at an angle 30 below the horizontal to reach the ground 150m below? =800(cos30 )= =800(sin30 )=400 = +12 2150=400 +12 2+400 150=0use of quadratic formula or simple graph and find = seconds800 m/s150 Kendall throws a baseball with a horizontal component of velocity of 25 m/s. It takes to come back to its original height. Calculate its horizontal range, its initial vertical component of velocity and its initial angle of projection. = =25ms = = ms = + =0, = 2, = = = = 2+ 2=252+ =25ms = 12529= : = +12 2= +12 : = =253=75 egg is thrown horizontally off the roof of SI, which is 60 meters high, with an initial velocity of m/s.

2 How long does it take to hit the ground? How far does it go in the x direction? = +12 2 , =0, =2 =2( 60) = = = diver jumps UP off a pier at an angle of 25owith an initial velocity of m/s. How far from the pier will the diver hit the water (Assume the level of water is the same as the pier) = = 25 ,( . ) = + 0 = 25 + 2 = 25 = 2 = = =( ) 25 = E. Coyote is holding a heavy duty ACMETM ANVIL on a cliff that is meters high. The Roadrunner (beep-beep), who is meter tall, is running on a road toward the cliff at a constant velocity of m/s. Wile E. Coyote wants to drop the anvil on the Roadrunner s head. How far away should the Roadrunner be when Wile E.

3 Drops the anvil?39 mx10 m/s1 39 =2 =2( 39 ) = , =10 = bullet is fired at an angle of 60owith an initial velocity of m/s. How long is the bullet in the air? What is the maximum height reached by the bullet? ,( . ) = + 0 =200 60 + 2 = 200 60 , 2= 2+2 02=(200 60 )2+2 =(200 60 )22( )=1531 = +12 2=200 60 +12( )( )2=1531 8. A bullet is fired at an angle of 45o. Neglecting air resistance, what is the direction of acceleration during the flight of the bullet?a) Upwardb) downward c) dependent on the initial velocityd) at a 45oangleA golfer drives her golf ball from the tee down the fairway in a high arcing shot.

4 When the ball isat the highest point of its flight:a. the velocity and acceleration are both zerob. the x-velocity is zero and the y-velocity is zeroc. the x-velocity is non-zero, but the y-velocity is zerod. the velocity is non-zero, but the acceleration is zeroA bullet is fired horizontally from a gun. At the same time a similar bullet is dropped from thesame height. The fired bullet will:a) hit the ground first b) hit the ground second c) hit at the same time as the dropped bulletd) never hit the grou